Hot-air fire-place



(Men D. PEARSON.

HOT AIR FIRE PLAGE.

NQZ 322,634. Patented July 21, 1885.

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H H [Hz/H v WITNESSES INVETO M v w ATTORNEYS.

UNITED STATES PATENT OFFICE.

DOYEL PEARSON, OF MEMPHIS, TENNESSEE.

HOT-AIR FIRE-PLACE.

SPECIFICATION forming part of Letters Patent No. 322,634, dated July 21,1885.

Application filed October 2, 1884. (No model.)

To all whom it may concern.-

Be it known that I, DOYEL PEARSON, of Memphis, in the county of Shelbyand State of Tennessee, have invented a new and Improved Hot-AirFirePlace, of which the following is a full, clear, and exactdescription.

The object of my invention is to more largely utilize fireplaces forheating rooms, and also to provide for the special application of theheated air; and to these ends it consists in the peculiarconstructionandarrangementof parts, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a front elevation,partly sectional, of a fire-placeembodying my improvements. Fig. 2 is a Vertical section on the line a a:of Fig. 1. Fig. 3 is a horizontal section, and Fig. 4 is a verticalsection on line 3/ 3/ of Fig. 1.

The brick-work A is made w th a recess for the fireplace, as usual. Inthis recess is the fire-box or heater, formed by a plate or casting, at,having side flanges, b, which extend to the front, as shown. The plate ainclines outward at the top, and the side plates set off from thebrick-work, so as to form an airspace or box, 0, between the plates andbrickwork. (2 are the grate-bars,consisting of tubes set in the sideplates, 1), so as to allow passage of air from one side of the fire-boxto the other. by a fixed partition, 6, and into the smaller spacethusinclosed an inlet, f, formed through the brickwork, leads from the outerair. From the top of the main air-space a pipe, 9, leads upward and intothe room at any desired place, or to other roo1ns,where it may be fittedwith a flexible pipe for conveying the heated air to a bed or otherspecial place in the room.

The back plate, a, is formed with ribs h, that strengthen the plate, andalso form air-spaces to promote combustion.

The airspace at one side is divided In operation the fresh air from theoutside enters at the inlet f, passes through the tubular grate-bars tothe air-box, and from thence to the pipe 9. vIn this passage the airbecomes highly heated,and ,coming directly from outside, is purer andfresher than the vitiated air of rooms.

There is shown at i an opening in the side plate, I), for admitting airfrom the air-box to the space beneath the grate to promote the draftthrough the fire.

The use of cold air from outside in the manner described tends to keepthe plates forming the fire-place from burning out, and a great amountof waste heat is utilized.

I am aware that a fire-place having an airheating chamber back of thefuelchamber for supplying heated air to warm other rooms is old; and Iam also aware that tubes have been arranged across the upper part of thefuelchamber, the said tubes communicating with the air-chamber in therear of the fuel-charm her, and I therefore do not claim such invention.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. The herein-described fire-box or heater,consisting of the forwardly inclined back plate, at, having sideflanges, b, and provided with the ribs h, and the inclined plate 6,projecting from one side flange and forming a partition when the heateris in position, and

the tubes d, having their ends passed through the side flanges andforming grate-bars, as set forth.

2. In a fire-place heater, the back plate, a, provided with the ribs h,the side plates, 1), the tubular grate-bars d, and the partition 6, incombination with the inlet f and outlet 9, substantially as herein shownand described.

DOYEL PEARSON. Witnesses:

R. B. SPILLMAN, A. 1?. (Econ.

